Electrical railway-signal.



No. 818,662. 7 PATENTED FEB. .27, 1906.

- A. W. NELSQN ELEGTRIGAL RAILWAY SIGNAL.

APPLICATION FILED MAYll. 1905.

2 SHEETS-SHEET 1.

No. 813,662. PATENTED FEB. 27,1906

I A. W, NELSON. ELECTRICAL RAILWAY'SIGNAI.

PPPP IOAQIONl PPPPPP AY-ll, 1905;

c2; mumwf l f mvrrnn STATES. PATENT oFFroE.

i Specification of Letters Patent.

Patented Feb. 27, 1906.

Application filed May 11,1905. Serial No. 259,859.

To (all m'lm/u if may concern.-

Be it known that I, AUGUST W. NELsoN, a citizen of the tinited States, residing at Spokane, in the county" of Spokane and State of WVashington, have invented new and useful 1 Improvements in Electrical .l{ailway-Signa-ls,-. of which the following is a specification.

My i 'vention relates to improvements in electric railway-sigimlsz and the object is to provide an electrically-operated railway-signal which maybe applied to uses on a straight track, but is especially designed for use to give required signals on curves of a track where the entrance and egress from the curve cannot be seen at the same time under ordinary circumstances. Therefore I provide li hts and signals at each end of the section w 'ch are displayed simultaneously at each end of the curve and by trains moving in either direction.

It may be premised that the tracks maybe multiplied and the connections and appliances suitably disposed in operative arrangement.

I accom 'lish the objects of my improvements by the means, mechanism, appliances, and aggroupments of parts illustrated in the annexed drawings, all of which will be fully described hereinafter, and then the asserted novelty will be particularly pointed out and distinctly claimed. I

In the drawings, wherein similar elements and parts are designated by like reference notations in the several illustrations, Figure 1 is a diagran'imatic view showing a curved section of a track and my improvements as a plied thereto. Fig. 2 is a view in elevation 0i a supporting-post having my improvements mounted t ereon. Fig. I, is a view in elevation of the signal-casing with the front plate removed and showing the arrangementof the semaphore, the operating-magnet, and the bell, also indicating the circuits controlling these elements. Fig. 4 is a. vertical transverse sectional view of a rail and illustration of the mechanism for cllccting the contact which closes the circuits.

Referring to the drawings, 1 designates a railway-track, the rails 2 of which are laid to produce a pronounced curve therein, as indicated. Preferably within the cycle of the curve is arrangfll a metallic circuit composed of wires 3 4*, carried on suitable supports and cross-bars, as at 5. A battery 6 is positioned manner.

may be multiplied; so that each track may 65.

at a proper location and the o posite limbs 7 guarded section or curve is mounted a signal housing or casing 9, having glass bulls-eyes or disks 10-disposcd thereiii, through which the rays of the lamp are thrown in the usual It may be stated that the glasses be guarded by designated lights illumined through circuit connections, as heretofore alluded to. In the housing in proper relation to the. glass is properly mounted and secured an electric lam or light 11, having circuit connections wit the main-line wires 3 4 by wires 13 14,- as indicated in Fig. 3 of the drawings. Also an alarm 15- is provided; This may be of 'any approved type andhas connections to the mam-wire circuit by wires 16' 18 designates an e'lectromagnet in circuit with the mainwires 3 4 by wires 19 20. The

semaphore 21 is pivotally supported in the housing and hast e short arm 22 extendin to the rear of its pivotal support and adapte to be'drawn down into contact with the core of the magnet when. that member is electriczilly energized, and thus display the sema ore.

p It wilLbe perceived that when the current is inforcc on the main circuit the magnet will be energized and the semaphore thrown up.

At the same time the light will he made to glow and the bell or alarm operated. To ef- 0 feet this simultancous action, I have devised a device actuated bythe passing wheels of the cars. This device comprises a bottom or foundation piece 23, sha ed to set over and on the T-flange of the rai and formed with a vertical hollow sleeve 24, wherein is slidably disposed the stem 25 of a bearing-yoke 26, between the arms of which is journaled a roller 27, arranged in the path of the wheel flange, as indicated in Fig. 4 of the draw- I00 mgs. The yoke carries a contact-piece 28, having connection to one of the main-lino wires, and is adapted to be depressed into contact with a companion contact-piecc 29,

secured to the sleeve 24, and has connection to one of the main-line wires by wire 30 and leading to a limb of the battery. lt will be perceived that the main circuit stands normally open and the semaphore at safety,

but that when the roller 27 s depressed the to base-piece, ayoke slidabl made before the Wheel leaves that at the rear of it, and thus the continuity of the circuit be maintained. To return the roller to normal position and thus separate the contacts, an expanding spring 31 is lodged in the bore of the-sleeve 2 What I claim is a 1 1. The combination with an electrical si nail and a circuit connected therewith standing normally open, of contacts comprising a disposed in the base-piece, a roller journa ed in the yoke in the path of the wheels of a passing car, contact-pieces fixed to the base-piecesand to the yoke, and adapted to contact when the roller and the yoke are depressed.

' -2. The combination with an electricallyoperated signal, and a circuit connected therewith and standing normally open, of contacts com rising a base-piece formed with a vertical s eeve and adapted to be secured to the bottom flange of a rail, a yoke slidably disposed in the said sleeve, a spring to lift and old, the yoke in upper position, a contactpiece secured to the yoke, and connected to the circuit, a'contact-piece secured'to the said sleeve, and a roller'jou'rnaled in the yoke in the path of a passing car.

In testimony whereof I affix my signature in presence of two subscrihin witnesses.

AUGUST NELSON. Witnesses: JOHN L. FLETCHER,

A. G. HEYLMUN 

